Pushrods for 228r cam?
05-29-2011, 09:15 PM
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Pushrods for 228r cam? I am seeing alot of people running 7.4" pr's with these cams, but than I am seeing alot of people saying that the base circle is smaller and you need to run a 7.425" pr. So with stock heads, head gasket and all what size pr should I need with the 228r? Stock ls1's with stock heads/headgaskets should all be the same so what should it be?
05-29-2011, 10:36 PM
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I actually just helped a buddy install a 228r this weekend in his car. It was a bolt on only car before we did the cam.
With his stock motor we went with 7.400 pushrods and his valvetrain is just as quiet as stock.
7.400 should work just fine for you.
With his stock motor we went with 7.400 pushrods and his valvetrain is just as quiet as stock.
7.400 should work just fine for you.
05-29-2011, 10:58 PM
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It is best to measure for proper lengh. I am running a 228 version and have tested both, with the 7.425's being the best.
This is with cam only, everything else motor wise being completly stock.
-Dan
This is with cam only, everything else motor wise being completly stock.
-Dan
05-29-2011, 11:49 PM
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your valve train would be noisy, and since the pushrod could be too long 7.45!?!? you could possibly run in to coil bind and or ptv clearence issues. ask tsp if the base circle is smaller. if it is run 7.425 assuming nothing else hase been changed. best choice measure, dont go with word of mouth
05-29-2011, 11:56 PM
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When my buddy ordered his 228r TSP told him he would need the 7.400 pushrods with this cam. I would trust they know what their talking about. Sure you could measure if you want to waste the time but TSP has so much experience with this very common cam, I think they know what they are talking about when they said to use 7.400.
Like I said we did this exact combo on his car and it runs great, sounds great and the valve train is nice and quiet without the dreaded sewing machine noise so many people talk about.
Like I said we did this exact combo on his car and it runs great, sounds great and the valve train is nice and quiet without the dreaded sewing machine noise so many people talk about.
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05-29-2011, 11:58 PM
#8
you can buy a push rod checking rod tool.use a dry wipe black marker on your valve stems.your stock push rods are 7.385.marker the valve stem,install push rod checker tool and rotate the engine by hand and look at the wipe pattern on the valve stem.screw it in or out until the wipe pattern is in the middle of the valve stem.measure the length and order that length of push rod from a vendor on here.I believe there is a sticky on this forum for measuring proper push rod length.
05-30-2011, 01:54 AM
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When my buddy ordered his 228r TSP told him he would need the 7.400 pushrods with this cam. I would trust they know what their talking about. Sure you could measure if you want to waste the time but TSP has so much experience with this very common cam, I think they know what they are talking about when they said to use 7.400.
Like I said we did this exact combo on his car and it runs great, sounds great and the valve train is nice and quiet without the dreaded sewing machine noise so many people talk about.
Like I said we did this exact combo on his car and it runs great, sounds great and the valve train is nice and quiet without the dreaded sewing machine noise so many people talk about.
This would be the EXACT reason why I just sold a set of TSP 7.4's and had to go with the 7.425's.
Buy the length checker and make sure.
05-30-2011, 02:34 AM
#10
duration is not whats important here its the base circle of the cam. So assuming its around .600 lift??? I would venture to say if your engine is stock otherwise you would need 7.4's or 7.425's but you just never know there is too many variances in the building of the engine. If i had to guess i would say the 7.425's.
05-30-2011, 06:06 AM
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When my buddy ordered his 228r TSP told him he would need the 7.400 pushrods with this cam. I would trust they know what their talking about. Sure you could measure if you want to waste the time but TSP has so much experience with this very common cam, I think they know what they are talking about when they said to use 7.400.
Like I said we did this exact combo on his car and it runs great, sounds great and the valve train is nice and quiet without the dreaded sewing machine noise so many people talk about.
Like I said we did this exact combo on his car and it runs great, sounds great and the valve train is nice and quiet without the dreaded sewing machine noise so many people talk about.
05-30-2011, 08:16 AM
#13
I have the 228R, AFR 205 heads milled to 62cc, 7.40 rods, 30 pound injectors,Vararam intake, FAST 90/90 and 3.90 gears. Im a tuner and it puts down 450 RWHP 430 RWTQ with an safe AFR just above 12.
The 3.90s made the car very balanced.
You dont have to got over the top with these cars to make very good HP. A 228R cam is just under the old school of what was a large cam of 230 and above.
The 3.90s made the car very balanced.
You dont have to got over the top with these cars to make very good HP. A 228R cam is just under the old school of what was a large cam of 230 and above.
05-30-2011, 08:31 AM
#14
I have the 228R, AFR 205 heads milled to 62cc, 7.40 rods, 30 pound injectors,Vararam intake, FAST 90/90 and 3.90 gears. Im a tuner and it puts down 450 RWHP 430 RWTQ with an safe AFR just above 12.
The 3.90s made the car very balanced.
You dont have to got over the top with these cars to make very good HP. A 228R cam is just under the old school of what was a large cam of 230 and above.
The 3.90s made the car very balanced.
You dont have to got over the top with these cars to make very good HP. A 228R cam is just under the old school of what was a large cam of 230 and above.
05-30-2011, 01:39 PM
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With so many peole going with the 7.4's and being fine and tsp recomending them I think I will go with those. Cuz I have to order the kit before I start tearing down the motor.
05-31-2011, 09:06 AM
#17
We recommend pushrods based on what works in the majority of combos and what we are told about different combos. It is NOT a for sure length on any setup. We always recommend picking up a checker tool and measuring. If the length sent is wrong it is a quick exchange. If you throw them in and run them and later find out they are too long, that will result in you having to order new pushrods.
Jon
Jon