JEGS High Performance - GM Performance Parts 350ci / 290hp Engine

GMPP "290hp" 350ci crate engine...part number 809-12499529 through Jegs. Would i be able to bolt the TPI intake to these style heads? how much power do you guys think this engine would make with TPI, appropriate injectors, and appropriate PROM tune? they say it makes 290hp with a 4bbl and headers. i have the headers lol. the cam is .450'' intake and .460'' exhaust. how would the TPI behave with this cam?

btw which is better, a one piece rear main seal or two piece?

thanks guys!

 

i'm not sure if your TPI setup will bolt onto those heads. I think that'd probably have 993 heads or the like. Maybe you have to elongate the bolt holes, not sure.
A 1 piece seal is the newer design, supposed to be less prone to leaking. I wouldn't put too much thought into that, probably assembled either style will work.
They don't mention LSA, but that cam has 222/222 duration. I think it's lame enough to work with TPI, if you feel like burning a prom.

 

Here are the full cam specs on this engine

291/287 @ .006
222/222 @ .050
.450/.461 lift
114.5 LSA

 

so would it just be cheaper for me to find a junkyard 350 and have it rebuilt with a Summit 383 kit and then slap the tpi heads and intake on there?

 

cheaper? probably not.
More power? Definately.

 

buy a flat top shortblock

get a computer cam

buy some vortec heads

you will be much better off and I think you will make more power and keep it under 1600

 

Check out Paceperformance.com I have that motor and I got it from there a little cheaper. I think it's a good motor and it works well with my tpi, besides the fact it made its peak hp at 5100rpms. But once I got an exhaust and a tune it really woke up. I feel it puts me in the high 13's which is a little better than an L98. But yours is a 91 so it has center bolt heads so your intake manifold won't bolt up. I can't wait for the warrenty to run out cause then I'll start gettin some heads and cam. Good luck on your decision.