Small Block & Big Block Chevy SpecificMouse & Rat Motor Discussion & Conversions
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View Poll Results: How much HP should I make? (Read Engine Details 1st)
I am in the process of rebuilding my 350. It is a 2 Bolt from an 87-91 Full Size Truck. I am using an eagle cast crank(3.48"), eagle connecting rods(5.7"), hyperutectic flat top pistons (.030) and a comp cam with stock heads & rebuilt valvetrain with 1.5 ratio rockers. I should be around a 9.4 / 9.5 to 1 compression ratio and am using the TBI from the pickup it is going in. The Cam Card is as follows;
Lobe Separation Angle
I am putting this engine in my 95 Chevy C1500 Pickup 2WD, 4L60E, and 3.08 rear end gears. I am not concerned with making max power but I would like to know what it might make.
You probably know this but you must tune the crap outta a TBI system to reap all of the benefits of your new setup. Not tryna be an *** but I have seen to many people completely disregard chip burning in TBI setups.
thirdgen.org is the best place to get help with TBI chip burning.
You should be putting out some good power, TBI will get the beast movin' from a stand still.
youre not going to make that much power, ive been down the tbi road before..it will make decent though, id guess around 245 at the crank if youre lucky. Its the tbi and the shitty stock heads that hold you back..those tbi heads are the worst flowing heads ever.i had a similar setup 355, cam, headers,intake,"chip",etc etc..it had good torque but not a whole lot of power. I will agree with the above, thridgen is a great source of any and all things tbi and tpi. Your going to have to do something though with that 111 lobe sep, i dont think the stock chip will even run it , it may but i dont think so.
I went to third gen.org and got some more help there. My 111 degree LSA is near my stock LSA of 110 on my 1995 engine. My TBI is from a 1995 c 1500 truck so I think it will work good with the computer.
Ok, you will need some cop car injectors(68 lb/hr), adjustable FPR, and definately a chip but I see 250-260hp out of that...tuned to the max. You have 210 stock then you bumped compression a full point and added a nice size cam so....but you will need to get the exhaust done, open up the intake system to make it.
You will need a chip to run it...the stock cam is like 179/194 plus TBI engines are particularly picky with vacuum, MAP pressures, etc. TBI engines are very picky.
Hope this helps.
2012 Chevrolet Tahoe LT
5.3L, 6L80e, 3.42s, G80 2011 Chevrolet Silverado
6.2L, 6L90e, 3.73s, G80 1990 Chevrolet C1500 Sport
Consider an aluminum carb manifold (like an Edelbrock Performer from Ebay) with a TBI adapter plate. Some power (and weight savings!) to be found there.
Sounds a lot like the motor I put together in my '79 Z28. I bought a crate L05 GM motor (92-93 Caprice, plain jane all the way), put a CompCams 302 in it (210/220 .480 lift), Edelbrock Performer manifold, Holley TB adapter plate, Holley TB, Painless harness, MSD Pro Billet distributor, and a '747 ECM. I haven't driven it a whole lot (car needs a lot of body work), but it runs just fine. Sounds good through the Hooker headers and Flowmaster H-pipe exhaust (LOL, there's nothing quite like an old Camaro with Flowmasters). I have tweaked the chip some with Tunercat software, but not a lot.
you're not looking to spin the motor to the moon and since it's a truck, torque is where it is at, so check out that site....has a dedicated performance board with tons of stickies for TBI motors and chip vendors.