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Old 06-03-2008, 05:48 PM
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tpi???

hi...right now i have a 305 tpi engine from a camaro z28, and a tpi setup from a 350 trans am gta,

i just bought a 1964 327 engine and wanted to put all of the tpi setup in the camaro...am using the top of the 305 tpi setup in the 327 except for the injectors,the injectors that am going to use for this setup are the ones in the 350 tpi trans am gta,which it also includes the computer,and chip...

what i wanted to know is...is this a good idea...???is it going to work well as for performance and daily driver...???would it be in 300hp-320hp area...???
any suggestions...or is there any other mods that i need...???

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Old 06-04-2008, 09:05 AM
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You could easily get 300hp out of it.....I would go for it TPI will give you a great running clean motor.

Great for a daily. And if you feel comfortable in doing it I say go for it.

Its not that its hard to do.....just gotta do it!
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Old 06-04-2008, 05:06 PM
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oh ok...thats good...all i want is at least 300-330hp with bolt on's,such as...shorty headers,roller tip rockers,double timing chain,and throttle body spacer (if there's sum for tpi)... or is it going to make a Lil bit more hp than that with everything together...???
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Old 06-04-2008, 05:19 PM
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I installed TPI on my 350 in my pickup. Its got an RV cam , World S/R heads and 4 valve relief flat tops. I believe its about 9:1 compression and I got 212 rear wheel HP and 292 FT/LBS rear wheel torque.
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Old 06-04-2008, 05:33 PM
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but the 327 if am not mistaken comes with 300hp stock...i dont think that am going to be that low in hp...
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Old 06-04-2008, 06:30 PM
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not at the motor......but you can figure on losing 20-30 Hp with a Stick shift and 40-50 with a auto.

Most HP ratings you hear are all flywheel ratings. Even on those window stickers at the dealership.

WHY? because they sound better.
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Old 06-04-2008, 06:52 PM
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That was with a TH350 auto.
It wouldn't rev higher than 4900 RPM also.
The green line is with a air filter box and stock exhaust manifolds and 2.5" single exhaust and cat.
The blue line is after I took off the filter box and left it open at the throttle body.
The red line is with 2.5 dual exhaust, tuned 1.5" primary headers, H pipe, cats and a huge K&N air filter.
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Old 06-04-2008, 09:44 PM
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so now if i go wit a 350 sbc would it make more hp...than the 327...??? i finally decided to go with the 350 so yeah...is it a better idea...???
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Old 06-04-2008, 09:54 PM
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A 350 might make more power I personaly like the 327. But the 350 is cheaper to build.
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Old 06-04-2008, 10:01 PM
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oh ok...and just this one question...i have a 2 bolt main 350 sbc and i just bought a 4 bolt main 350...whats the difference...??? does the 4 bolt offer more hp or what i just dont know that...

i think am using the 4 bolt bored 40 over for hi-performance use on my t/a

and the 2 bolt main bored 40 over for the tpi setup daily driver for the camaro...
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Old 06-05-2008, 04:23 AM
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My intent was not to say a 350 is better. I was just throwing out some info for you. The 327/300 HP is a rating at what RPM?

Remember, a stock TPI runs out of breath at 5000 RPM's.

As for 2 bolt and 4 bolt , you have it correct. You could never produce enough power with the (stock) TPI to break the 2 bolt.

If I could do it over, I would have stroked the 350 to 383. The torque is good now, but it would have been alot better as a 383.
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Old 06-05-2008, 07:49 AM
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Like pugsy said the only real good use for a 4bolt is a really hi performance app. Or a 383.
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Old 06-05-2008, 10:46 AM
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oh ok...well for the 4 bolt main i will throw in a 280h comp cam,performer rpm intake,plus the headers and so on...but the only thing thats holding the hp down are the heads...i know that votecs work good but i just dont have the matching intake for those kind of heads...i would like to know what heads should i use that are better flowing and have big valves like 1.94-up 1.5-up...

right now i have the following heads on my shop...but there just junk as i have read about them...well i have-305 tbi heads (14101081) with 58cc
305 tpi heads (14022601) with 53cc
350 tbi heads (14102183) with 64cc
350 c4 corvette heads (462624) with 76cc and 2.02/1.6 valves...but all i know is that 305 heads will not go good with a 350 flat top pistons with 10.3 cr with 64cc...and tbi heads wont flow good enough,and the vette heads break easily...well thats what i read from them...

i have the budget to buy aftermarket alumminum heads...but the thing is that i want to use cast iron cause they can take more heat than alumminum...

i wanted to know if someone knows any cast iron head that has good flow numbers and big valves besides the vortec...???and should i be able to find them in used autoparts or junk yard...???or choose from what i got...???
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Old 06-05-2008, 02:26 PM
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I would slap those 76cc heads with the big valves on your DD and go ahead and buy some alums for your Hi-Po motor.

Another good head would be the double humps....however if you do find any they will cost about as much to rebuild as a new set of alum ones.
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Old 06-05-2008, 03:26 PM
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by installing the c4 vette heads (462624) 2.02/1.6 are they able to stand the tpi...or am i risking that they will break...???cause i read that they break easily...

with what engine and car do those double humps heads come with...theres like so many places i can find them for cheap here locally were i live so i can just ask them...

any other good cast iron chevy heads or any gm heads that fits real good on a 350 and flow good/big valves...???help plz...
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