engine build question?

[SN_95]

okay. So i have been building a budget 351W for my 95.

The 351 is started with a 69 motor out of a Mach 1. Factory hp/tq numbers for that motor is 290/385.

The motor has been bored .060 over with factory heads with a 9 angle valve job with light port work and a shaved head and deck. Compression is around 11.5:1

I converted the motor to fuel injection with 30 lb/hour injectors on a edelbrock rpm intake. The fuel system is going to be full braided -6an from the tank to the 1/2 inch rails.

I will be running short tube headers an offroad x and moroso dumps.

It has underdrive pullies and has been converted to accept all the accesories off of a 95 lightning.

My question is what kind of power do you guys think it will make?

 

[foxman92]

my guess to the wheels, maybe 340hp.. thats kinda pushing the limits with stock heads.. the stock heads are the weak link to the 302/351 engines..

 

[SN_95]

i forgot to mention that it also has a fairly large flat tappet crane cam.

But really the only reason i asked is because i have a cocky friend with a 302 with a wolverine cam and gt40 heads who claims his puts down more power than my 351 will.

and really? only 340? with 11.5:1 compression?

 

[foxman92]

i forgot to mention that it also has a fairly large flat tappet crane cam.

But really the only reason i asked is because i have a cocky friend with a 302 with a wolverine cam and gt40 heads who claims his puts down more power than my 351 will.

and really? only 340? with 11.5:1 compression?

your buddy's car will be super lucky to hit 300hp, with just stock gt40 heads, and a cam. even with full bolt ons.. stock 5.0 only make 225hp stock at the flywheel..

its really hard to estimate hp, but if i had to guess id say close to 340ish at the tire.. you really need a good set of heads..

 

[PSUCOBRA96]

the problem is your original horsepower numbers were made with no accesories and different standards than today, the heads may be ok now with the 9 angle valve job, the cams will help so it will push over 300hp i think but it may be more bottled up from the heads than you think, but i would hope it will out perform the 302

 

[Blown_By_You]

the problem is your original horsepower numbers were made with no accesories and different standards than today, the heads may be ok now with the 9 angle valve job, the cams will help so it will push over 300hp i think but it may be more bottled up from the heads than you think, but i would hope it will out perform the 302

this.. I think you'd be lucky to have 340 Flywheel horsepower..