Anyone Destroked to a 302?
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From: Sierra Vista, AZ
Anyone Destroked to a 302? I read an article on the building of a nostalgia based 302c.i. for a 4th Gen Fbody. Problem is I cannot remember where. Obviously our cars have their place in history and my favorite is the 1st Gen Z-28 with the 302ci. Has anyone built a LS1 version of this engine? if so, where can get info on it and parts list. Thanks.
Charlie
00' NBM Z-28, descreened MAF, K&N FIPK, Yank 3K, LCA & SFC, only 12,600 miles. 13.4 @ 103mph.
Charlie
00' NBM Z-28, descreened MAF, K&N FIPK, Yank 3K, LCA & SFC, only 12,600 miles. 13.4 @ 103mph.
Re: Anyone Destroked to a 302? I dont know of anyone that has done this. but its a really cool idea. talking about a motor that would rev. I had a 302 in a 68 Z/28 and man i shifted at 7000 and never hurt that motor. that baby would rev. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
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From: Friendswood TX
Re: Anyone Destroked to a 302? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by SStrokerAce:
<strong>You can always get the crank out of the 4.8L and make a 312. That would be a cheap easy way to do it.
Bret</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">How high could u spin that motor?? might sound intersting
Drew
<strong>You can always get the crank out of the 4.8L and make a 312. That would be a cheap easy way to do it.
Bret</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">How high could u spin that motor?? might sound intersting
Drew
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Re: Anyone Destroked to a 302? Instead of spending money to decrease stroke why not increase stroke?If everything is forged you can still rev it to the sky and make more power.I dont see a point in pulling a motor and adding a smaller crank or pistons and rods when you can go bigger.
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Re: Anyone Destroked to a 302? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Cammin BeaSSt:
<strong>Year One did the 302 motor. Its a destroked LS1. Nice pewter Z28on some18" TTIIs. Check them out for more info.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Not trying to be a ***** here but it was actually Westech that built the 302 out of the LS1. It used a 3.84 bore and 3.268 crank (4.8 Crank). It used the LS6/2001-2002 intake. TTS headers, Dyer Lite rods, ported LS6 heads(by Advanced Airflow) with pistons machined to match the combustion chambers, 1.9 ratio Jesel rockers and a 234/240 solid roller with .629 lift with a 110 lobe center. They did one thing a little different with the intake though , they ran the 2001 PCM program instead of modding the intake for the egr. I think it was a nice setup but the only way I would want to destroke an engine is if piston speed was over 4000 ft per second on a street car. Also I like short stroke power adder engines because I think that it is benefical to have a little overrev to work with. Just my .02.
Later,
Bart
<small>[ October 08, 2002, 01:20 AM: Message edited by: Speedfreaks101 ]</small>
<strong>Year One did the 302 motor. Its a destroked LS1. Nice pewter Z28on some18" TTIIs. Check them out for more info.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Not trying to be a ***** here but it was actually Westech that built the 302 out of the LS1. It used a 3.84 bore and 3.268 crank (4.8 Crank). It used the LS6/2001-2002 intake. TTS headers, Dyer Lite rods, ported LS6 heads(by Advanced Airflow) with pistons machined to match the combustion chambers, 1.9 ratio Jesel rockers and a 234/240 solid roller with .629 lift with a 110 lobe center. They did one thing a little different with the intake though , they ran the 2001 PCM program instead of modding the intake for the egr. I think it was a nice setup but the only way I would want to destroke an engine is if piston speed was over 4000 ft per second on a street car. Also I like short stroke power adder engines because I think that it is benefical to have a little overrev to work with. Just my .02.
Later,
Bart
<small>[ October 08, 2002, 01:20 AM: Message edited by: Speedfreaks101 ]</small>
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Re: Anyone Destroked to a 302? If I remember correctly, the car made 360-370rwhp or so. Decent power in general, but that's slow for an LS1. Solid roller (even some hydraulic roller) stock displacement cars are making ~450rwhp or close to it.
Dope
Dope
Re: Anyone Destroked to a 302? I looked into doing this for quite some time, however after extensive research, Decided to plan another route. The 302 would come into limitations not on the bottom end, but on the valve train. Even the BIG stroker spins to 8k when set up properly. The 302 I was planning had a monter cam, but yet wouldn't make any more torque than a stock motor with all the bolt ons, and would n't peak until 5700-6000, the upper RPM horsepoer would have been nice, but it owuldn't have started seeing gains until 6000+... all the way to 11,000 if it could have been built that way <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> With aggressive lobes, 1.8:1 rockers, that much RPM is a problem. I am inclined to agree with the people who say just go bigger, trust me, a 422 revs plenty quick <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
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Re: Anyone Destroked to a 302? Car had 4.56's in a stock 10bolt. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Went for a ride in it when getting some gas. Very fun, watching the RPMs. <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" />
Here's a pic:
My Pewter Z28 with black Stripes, PSJ's Red Monster and the 302:
<img src="http://www.fasta4racing.com/302/MVC-881X.JPG" alt=" - " />
<small>[ October 08, 2002, 11:21 AM: Message edited by: Paulie ]</small>
Went for a ride in it when getting some gas. Very fun, watching the RPMs. <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" />
Here's a pic:
My Pewter Z28 with black Stripes, PSJ's Red Monster and the 302:
<img src="http://www.fasta4racing.com/302/MVC-881X.JPG" alt=" - " />
<small>[ October 08, 2002, 11:21 AM: Message edited by: Paulie ]</small>
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Re: Anyone Destroked to a 302? As some one already noted the heads on these LSx engines are outstanding and the intakes aren't even a quarter as bad as people think either. If you destroke it you will only have to rev it more to make the same power (or less) and in the LS1's case you may run out of rpm since the heads are so damn good. This will leave you with less tq everywhere and also less hp especially down lower. Basically you'll spend a lot of money to go slower but at a higher rpm?
<img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
<img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
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Re: Anyone Destroked to a 302? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Pro Stock John:
<strong>You still have those pics Paulie?
I drove the car once it was lot of fun.
Car was built to be a showcar that was also very driveable, not a max drag effort. I think it still has AC on it folks.
I wonder how they got that bore, hey Brad ask Norm if they used a 4.8 block would ya? <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
This combo commemorates TransAm racing. Max displacement allowed back then was 305ci. I think the DZ302 is a 327 bore with a 283 crank I don't remember.
IMO I'd like to see someone build a 6.0 (4.000 bore) setup with a 2.34 or 3.25 stroke... hmmm</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">GM provided a block with undersized bores to Norm Brandes of Westech.
As far as the 302 engines from the 1st gen Camaros, there were two variations. The 67 used a small journal 327 block and a 283 (small journal crank). The 68-69 used a large journal 327 block with a new crank desigened specifically for the new 302. The bore and stroke on both engines was 4.0 x 3.0.
<strong>You still have those pics Paulie?
I drove the car once it was lot of fun.
Car was built to be a showcar that was also very driveable, not a max drag effort. I think it still has AC on it folks.
I wonder how they got that bore, hey Brad ask Norm if they used a 4.8 block would ya? <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
This combo commemorates TransAm racing. Max displacement allowed back then was 305ci. I think the DZ302 is a 327 bore with a 283 crank I don't remember.
IMO I'd like to see someone build a 6.0 (4.000 bore) setup with a 2.34 or 3.25 stroke... hmmm</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">GM provided a block with undersized bores to Norm Brandes of Westech.
As far as the 302 engines from the 1st gen Camaros, there were two variations. The 67 used a small journal 327 block and a 283 (small journal crank). The 68-69 used a large journal 327 block with a new crank desigened specifically for the new 302. The bore and stroke on both engines was 4.0 x 3.0.
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Re: Anyone Destroked to a 302? Hey guys, Thanks for all the well thought input. Not rying to start a word war, just curious. I had the opportunity to drive a 69' Z with factory 302 (although some work done in the years since) and G.D. that was the only car I have ever seen run thru 9K rpms. If you've never run those rpms in a car then you just wont understand, you keep pressing the pedal and the damn thing just keeps revving higher and higher. Anyway, 15 years later I was biten by the Z28 bug again and curious if anyones done this as a tribute or just all out fun. BTW, I have a motorcycle also, just not as fun. Thanks.
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Re: Anyone Destroked to a 302? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Dope:
<strong>If I remember correctly, the car made 360-370rwhp or so. Decent power in general, but that's slow for an LS1. Solid roller (even some hydraulic roller) stock displacement cars are making ~450rwhp or close to it.
Dope</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">That is all anyone should need to know not to try that kit out.
<strong>If I remember correctly, the car made 360-370rwhp or so. Decent power in general, but that's slow for an LS1. Solid roller (even some hydraulic roller) stock displacement cars are making ~450rwhp or close to it.
Dope</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">That is all anyone should need to know not to try that kit out.
Re: Anyone Destroked to a 302? There is no reason to destroke the 5.7L. The rpm limit is the because of valvetrain not the bottom end. Stock short block is good for 7k rpms with good rod bolts. Thats right around where the limit is for hydraulic rollers.
If you want to rev get a motorcycle.
If you want to rev get a motorcycle.
Re: Anyone Destroked to a 302? You still have those pics Paulie?
I drove the car once it was lot of fun.
Car was built to be a showcar that was also very driveable, not a max drag effort. I think it still has AC on it folks.
I wonder how they got that bore, hey Brad ask Norm if they used a 4.8 block would ya? <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
This combo commemorates TransAm racing. Max displacement allowed back then was 305ci. I think the DZ302 is a 327 bore with a 283 crank I don't remember.
IMO I'd like to see someone build a 6.0 (4.000 bore) setup with a 2.34 or 3.25 stroke... hmmm
I drove the car once it was lot of fun.
Car was built to be a showcar that was also very driveable, not a max drag effort. I think it still has AC on it folks.
I wonder how they got that bore, hey Brad ask Norm if they used a 4.8 block would ya? <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
This combo commemorates TransAm racing. Max displacement allowed back then was 305ci. I think the DZ302 is a 327 bore with a 283 crank I don't remember.
IMO I'd like to see someone build a 6.0 (4.000 bore) setup with a 2.34 or 3.25 stroke... hmmm
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Re: Anyone Destroked to a 302? I read about this and liked the idea. <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" /> Couldn't you reproduce this motor with a stock LS1 block and a offset ground 4.8 crank?Or another possibility would be a 5.3 block bored .060 and 4.8 crank.
</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Car was built to be a showcar that was also very driveable, not a max drag effort. I think it still has AC on it folks.</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I was thinking the same thing.I would love to see what the possibilities of this motor would be?Would be cool atacking the blue camp boys with the same displacement as there venerable small block.And not have to hear the whining,"But look at your displacement! <img border="0" alt="[gay]" title="" src="graemlins/gr_rainbow.gif" /> "
<img border="0" alt="[pimp]" title="" src="graemlins/gr_pimp.gif" /> <img border="0" alt="[Z06 Corvette]" title="" src="graemlins/z06.gif" />
</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Car was built to be a showcar that was also very driveable, not a max drag effort. I think it still has AC on it folks.</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I was thinking the same thing.I would love to see what the possibilities of this motor would be?Would be cool atacking the blue camp boys with the same displacement as there venerable small block.And not have to hear the whining,"But look at your displacement! <img border="0" alt="[gay]" title="" src="graemlins/gr_rainbow.gif" /> "
<img border="0" alt="[pimp]" title="" src="graemlins/gr_pimp.gif" /> <img border="0" alt="[Z06 Corvette]" title="" src="graemlins/z06.gif" />
Re: Anyone Destroked to a 302? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Pro Stock John:
<strong>
This combo commemorates TransAm racing. Max displacement allowed back then was 305ci.
hmmm</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Exactly! Trans Am Series cars run a MAX displacement of 311 Cubic inches. A 2.9x stroke and a 4.0x bore, or any variant near that for 311 CID.
FYI, Current Trans Am cars are putting about ~605+ to the wheels <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
<strong>
This combo commemorates TransAm racing. Max displacement allowed back then was 305ci.
hmmm</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Exactly! Trans Am Series cars run a MAX displacement of 311 Cubic inches. A 2.9x stroke and a 4.0x bore, or any variant near that for 311 CID.
FYI, Current Trans Am cars are putting about ~605+ to the wheels <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />