Urgent- Can LQ4 ironblock be safely bored to 4.060" if no N20 or FI?
11-03-2002, 01:36 PM
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Urgent- Can LQ4 ironblock be safely bored to 4.060" if no N20 or FI? Need to make my final decision on my MTI ironblock (LQ4) motor and really want to get 427 cubes by going with 4.060" overbore and 4.125 crank vs. 4.035" overbore with 4.125 crank=422 cubes.
I really want the extra cubes here but do not want to jeopardize and realiability or bullet proof nature of engine. I am NOT GOING to SPRAY this engine with the gas and it will stay NATURALLY ASPIRTATED!
Need to make my mind up asap so MTI can order my pistons early this week.
Kindly respond and thanks for all input.
MTI 422 Z07 ROADSTSER
I really want the extra cubes here but do not want to jeopardize and realiability or bullet proof nature of engine. I am NOT GOING to SPRAY this engine with the gas and it will stay NATURALLY ASPIRTATED!
Need to make my mind up asap so MTI can order my pistons early this week.
Kindly respond and thanks for all input.
MTI 422 Z07 ROADSTSER
11-03-2002, 06:41 PM
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Re: Urgent- Can LQ4 ironblock be safely bored to 4.060" if no N20 or FI? got your message and I will call you soon.
but overall, yes you most likely will be just fine. To be sure you would sonic test the block, but you should be OK. It will be safe, just no rebuilds or refresh.
but overall, yes you most likely will be just fine. To be sure you would sonic test the block, but you should be OK. It will be safe, just no rebuilds or refresh.
11-03-2002, 07:02 PM
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Re: Urgent- Can LQ4 ironblock be safely bored to 4.060" if no N20 or FI? Why would you want to bring the block out to it's max bore size for 5 ci? Just to say it's a 427?
11-03-2002, 09:48 PM
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Re: Urgent- Can LQ4 ironblock be safely bored to 4.060" if no N20 or FI? INTMD8:
As long as its safe to go with a 4.060 overbore thats my preference b/c the more cubes the better for squeezing every last bit of power out of the engine and i want to get as close to 500/500 rwtq and rwhp and the 5 extra cubes could be worth 10 extra ponies and a tenth advantage in the 1/4 mile and i need every advantage i can get since i won't be spraying and will be trying for a consistent 10 second natuarlly aspirated C5 which is not an easy goal.
Bigger bore=more horesepower and 5 cubes is 5 cubes and is long as i don't jeopardize durabilty i would take a 427 vs. 422 any day.
MTI 422 Z07 Roadster (maybe soon 427) <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
As long as its safe to go with a 4.060 overbore thats my preference b/c the more cubes the better for squeezing every last bit of power out of the engine and i want to get as close to 500/500 rwtq and rwhp and the 5 extra cubes could be worth 10 extra ponies and a tenth advantage in the 1/4 mile and i need every advantage i can get since i won't be spraying and will be trying for a consistent 10 second natuarlly aspirated C5 which is not an easy goal.
Bigger bore=more horesepower and 5 cubes is 5 cubes and is long as i don't jeopardize durabilty i would take a 427 vs. 422 any day.
MTI 422 Z07 Roadster (maybe soon 427) <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
11-03-2002, 09:50 PM
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Re: Urgent- Can LQ4 ironblock be safely bored to 4.060" if no N20 or FI? SIR,
If i go with the 427 would you recommend a jacket filler or rock filler for extra durabilty or is this not necessary. Please explain what's involved with this as i am not sure but just bringing up what someone recommended to me.
MTI 427 Z07 Roadster
If i go with the 427 would you recommend a jacket filler or rock filler for extra durabilty or is this not necessary. Please explain what's involved with this as i am not sure but just bringing up what someone recommended to me.
MTI 427 Z07 Roadster
11-03-2002, 09:58 PM
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Re: Urgent- Can LQ4 ironblock be safely bored to 4.060" if no N20 or FI? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by MTI 422 Z07 Roadster:
<strong>SIR,
If i go with the 427 would you recommend a jacket filler or rock filler for extra durabilty or is this not necessary. Please explain what's involved with this as i am not sure but just bringing up what someone recommended to me.
MTI 427 Z07 Roadster</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">no filler. You will turn that thing into an overheating nightmare.
<strong>SIR,
If i go with the 427 would you recommend a jacket filler or rock filler for extra durabilty or is this not necessary. Please explain what's involved with this as i am not sure but just bringing up what someone recommended to me.
MTI 427 Z07 Roadster</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">no filler. You will turn that thing into an overheating nightmare.
